Status : Presented 
Date : 2014-10 
Title : Synchronization Error in QAM-based FBMC System 
Authors : Wonsuk Chung, Beomju Kim, Moonchang Choi, Hyungju Nam, Hyunkyu Yu, Sooyoung Choi, and Daesik Hong 
Conference : IEEE MILCOM 2014 
Abstract : We investigate the impact of the time offset (TO) and carrier frequency offset (CFO) on the performance of a filterbank multicarrier - quadrature amplitude modulation (FBMCQAM) system. As opposed to conventional FBMC system where offset QAM (OQAM) is utilized due to the intrinsic interference, the FBMC-QAM system cancels the intrinsic interference based on the orthogonality conditions between the two kinds of filters.
Because the FBMC-QAM system uses two kinds of filters, the effects on the TO and CFO are different compared to the conventional FBMC system. The performance of this system is degraded by TO because the two-filter orthogonality conditions are not satisfied, resulting in severe inter-symbol interference (ISI). With respect to the CFO, the orthogonality between the two filters protects from performance degradation caused by intercarrier interference (ICI). Numerical results show that FBMCQAM is more robust against CFO while it is more sensitive to TO compared to the FBMC-OQAM system. 
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Wonsuk Chung; Beomju Kim; Moonchang Choi; Hyungju Nam; Hyunkyu Yu; Sooyoung Choi; Daesik Hong, "Synchronization Error in QAM-Based FBMC System," Military Communications Conference (MILCOM), 2014 IEEE , vol., no., pp.699,705, 6-8 Oct. 2014
doi: 10.1109/MILCOM.2014.122
keywords: {channel bank filters;intercarrier interference;interference suppression;intersymbol interference;quadrature amplitude modulation;CFO;ICI;ISI;QAM-based FBMC system;TO;carrier frequency offset;filter bank multicarrier;intercarrier interference;intersymbol interference;intrinsic interference cancellation;performance degradation;quadrature amplitude modulation;synchronization error;time offset;two-filter orthogonality conditions;Indexes;Interference;OFDM;Prototypes;Quadrature amplitude modulation;Robustness;Synchronization;Carrier frequency offset;FBMC-OQAM;FBMC-QAM;Timing offset},


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» [IEEE MILCOM] Wonsuk Chung, Beomju Kim, Moonchang Choi, Hyungju Nam, Hyunkyu Yu, Sooyoung Choi, and Daesik Hong, "Synchronization Error in QAM-based FBMC System," IEEE MILCOM, Oct. 2014 file Presented  2014-10